Knob



FIG. 1 is a top view of the knob according to the claimed design;

FIG. 2 is a bottom view the knob according to the claimed design;

FIG. 3 is a left side view of the knob according to the claimed design;

FIG. 4 is a right side view of the knob according to the claimed design;

FIG. 5 is a front side view of the knob according to the claimed design;

FIG. 6 is a rear side view of the knob according to the claimed design; and,

FIG. 7 is a top perspective view of the knob according to the claimed design.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a knob, as shown and described. 